If obese adults in Iran eat fewer carbs and more fat, they might be less likely to have a group of health problems like high blood pressure and high blood sugar that raise heart disease risk.

Even though low-carb diets can improve some health numbers, in people who are already obese, sticking more closely to a low-carb eating pattern might actually go hand-in-hand with having more body fat and a higher weight.

If you're an adult between 20 and 50 who's obese, eating fewer carbs and more fats might be linked to healthier blood pressure, better cholesterol, and lower triglycerides — but we can't say for sure that the diet caused these benefits from this study alone.

If you're an adult with obesity, sticking more closely to a low-carb diet might help lower your top blood pressure number and overall cholesterol a little — but the data isn't strong enough to say for sure, and it doesn't seem to affect your bottom blood pressure number or triglycerides.

After eating, people on a low-fat, high-carb diet have higher levels of fat, sugar, and insulin in their blood for longer than when they eat a diet with more fat, which might stress the body over time.